I got an e-mail saying there is a problem with my model (nothing new there). This time though, it didn't give me any really issues! Has this ever happened to anyone before?
Maybe I'm just mistaken on what the real error is...

I have to change a small part in it that someone found after I tried the blank fail, but then I'll re-upload it and see what it responds. If it's blank again I'll probably send it to you.
Is there any idea why it sends a blank fail?

Did you happen to find anything? I keep trying slightly different versions, they all keep coming back with a blank error. I don't think my pieces are too small, at least not by my calculations, but I can't be sure.

Yeah, I started messing with that, and got it to repair 100% and save the stl. But it still sent me a blank rejection, so now I'm at a loss. Unless it could just be it's got a piece that's too small to make, I I wish it would just list that as the problem though.

Shapeways has a limit on uploaded models of 1 million triangles. Yours is at 1.5m and you need to try to reduce that some.

I believe that the upload process still has an issue that if you upload a model with more than 1m triangles, the background processing software aborts without producing a usable message.. hence the blank email.

Personally, I'd remove a LOT of the holes around the edge and such, but another option would be that you seem to be using 20 facets per circle, if you dropped that to 8 or 6 facets per circle, it is likely that you'd not be able to see the difference (these are VERY small holes), and it would drop a significant number of triangles out of the file.

A few notes ...
1) your "C" beam supports under the model are too thin. They measure out at 0.19mm thick and that will be rejected upon printing.
2) the "X" cross-supports are not 'connected', they are floating independently. that makes for 56 very small parts that the operator will have to pick out of the printer with tweezers, and a number of them are likely to be lost. Did you intend for those to be separate parts? If you do weld them to the main body, I'd consider removing the holes in the end of each beam.. again, those holes are contributing to the overall triangle count. Otherwise, you need to try to do something to collect them together in one area and sprue them together such that they don't get lost.
3) in the center of your model, you've got a bit of bad geometry that will fill in as solid and cost you more. The Boolean join you did for the hole under that center "knob" failed.. it needs to be redone.
4) the main 'skin' of the model (the part like the fabric on a umbrella) is also too thin. You've got it at 0.1mm and it must be at least 0.3mm thick.

I decided to make the skin of the old model removable, and it actually can be printed now! So success there, but I'm struggling with finding the error that is causing the structure to print. I went through and measured the wall thicknesses of everything I can find. Made sure I'm under 1m triangles and removed a large number of the holes. I also can't tell if the cross bracing parts between the C beams are actually connected. I believe they are, but don't know netfabb well enough to be certain. If anyone could take a look at the new model I'd be thankful.